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September 30, 2016

Homework Help: physics

Posted by seb on Monday, January 3, 2011 at 5:23pm.

Three charges are arranged in a line. From left to right, the charges are:
Q1= -8mC, Q2 = +3mC and Q3 = -4mC. The distance between Q1 and Q2 is 0.3 m, and the distance between Q2 and Q3 is 0.2 m. Calculate the net electrostatic force on Q3.

how can you find what point Q2 will be at equilibrium. show work

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